Fast and urgent urination may be caused by ureteral stones, cystitis, renal tuberculosis and other diseases. 1. Ureteral stones: the occurrence of this disease is related to sulfonamide drugs, urethral obstruction, urinary tract infection, metabolic abnormalities and other reasons. The typical symptom of ureteral stone is renal colic, but some patients may have frequent urination, urinary urgency, nausea, hematuria, fever and other symptoms. 2. Cystitis: This disease may be caused by bacterial infections such as Aspergillus and Staphylococcus, or non-infectious factors such as chemical allergies, radiation therapy and chemotherapy drugs. Clinical symptoms are mainly characterized by urinary urgency, frequent urination and burning sensation in the urethra. 3. Renal tuberculosis: this disease is mainly caused by other parts of the tuberculosis infection spread to the kidneys, such as pulmonary tuberculosis, intestinal tuberculosis, osteoarthritic tuberculosis and so on. It can be triggered by malnutrition, poor living environment and other factors. Usually there are no obvious symptoms in the early stage, but after the disease progresses, patients will have symptoms such as frequent urination, urgent urination, painful urination and so on. In addition, the causes of fast and urgent urination include prostatitis, pyelonephritis, urethritis, bladder cancer and so on. To summarize, when the situation of fast and urgent urination occurs, it is necessary to go to the hospital in time to consult the doctor and clarify the cause of the disease, so as to avoid delaying the condition.